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Rad Physics
Concepts of Radiologic Science
| Question | Answer |
|---|---|
| Is anything that occupies space and has mass | Matter |
| Composed of fundamental building blocks called atoms | Matter |
| Primary distinguishing characteristic of matter | Mass |
| Is the qty of matter as described by its energy equivalence | Mass |
| Measured in kilograms (kg) | Mass |
| Scientific unit of mass | Kilogram (kg) 1 kilogram (kg) = 1000 grams (g) |
| Fundamental complex building blocks of matter | Atoms & Molecules |
| Ability to do work | Energy |
| Measured in Joules (J) | Energy |
| Virtue of position | Potential Energy |
| Energy of motion | Kinetic Energy |
| Energy released by a chemical reaction | Chemical Energy |
| Electron moves through an electrical potential difference (voltage) | Electrical Energy |
| Heat is the energy of motion at the molecular level | Thermal/Heat Energy |
| Energy that is contained w/n the nucleus of an atom | Nuclear Energy |
| Type of energy that used in x-ray, least familiar form of energy | Electromagnetic Energy RMIVUXG |
| Who discovered Theory of Relativity | Albert Einstein |
| States that matter and energy are interchangeable | Theory of Relativity |
| Matter-Energy Equivalence | E=mc2 |
| The energy emitted & transferred through space | Radiation |
| Matter that intercepts and absorbs radiation | Exposed or irradiated |
| Capable of removing and electron from an atom | Ionizing Radiation |
| Removal of an electron from an atom | Ionization |
| Two oppositely charged particles | Ion Pair |
| Oscillating electric current & magnetic fields that travel in a vaccuum w/ velocity of light | Electromagnetic Radiation |
| Includes alpha, beta, protons, neutrons & electrons | Particulate Radiation |
| Annual of Natural Environmental Radiation (NER) | 300 mrem = 3 mSv |
| Annual of Man-made Source of Radiation (MSR) | 60 mrem = 0.6 mSv |
| Are particulate & electromagnetic radiation emitted by sun & stars, intensity increases with altitude & latitude | Cosmic Rays |
| Results from deposits of uranium, thorium and other radionuclides of the earth | Terrestrial Radiation |
| Potassium 40, natural metabolites | Internally Deposited Radionuclides |
| Largest source of NER, radioactive gas produced by the natural radioactive decay of uranium | Radon |
| Constitute the largest Man-made Source of Radiation (MSR) 39 mrem/yr = 0.39 mSv/yr | Diagnostic X-rays |
| Forerunner of modern fluorescent, neon & xray tubes | Crookes Tube |
| Discoverd xrays at Wurzburg University in Germany | November 8, 1895 |
| Fluorescent material used by Roentgen | Barium Platinocyanide |
| Emission of visible light only during stimulation | Flourescence |
| Year Roentgen received Nobel Prize in Physics | 1901 |
| He published and produced the first medical x-ray image. The first publication of x-ray examination | February 1896 |
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